AK
   Sometime when your system isn't at its peak, just take the segment
offline. Then wait a little while and check the status. Oracle won't take
the segment offline as long as active processes are using it. Oracle won't
let you drop it until it is able to take it offline.



Dennis Williams 
DBA, 40%OCP, 100% DBA 
Lifetouch, Inc. 
[EMAIL PROTECTED] 

-----Original Message-----
Sent: Friday, March 14, 2003 3:54 PM
To: Multiple recipients of list ORACLE-L


I have recently found that one temporary rollback segment in system
tablespace is having more then 600 extnets . It looks like previous dba
created this rollback segment at the time of db creation and forgot to take
it offline . 
Now how do I find it this rollback segment is being used actively . I see
values in gets , writes from v$rollstat view .
 
What step should I take to drop this rollback segment . What implication
might have if I take this offline ? I want to relase the space taken by this
rollback segment ( >600 extents ..thats big ) , so just taking offline wont
do this.
 
Are there any views accessible from system( no sys) account which can tell
me which trasaction is using which rollback segment .
 
 
thanks
-ak
 
 
 
 

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Author: DENNIS WILLIAMS
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